diff --git a/libs/binder/Parcel.cpp b/libs/binder/Parcel.cpp
index 40dd09b..27cf97c 100644
--- a/libs/binder/Parcel.cpp
+++ b/libs/binder/Parcel.cpp
@@ -1068,6 +1068,7 @@
 {
     if (str == nullptr) return writeInt32(-1);
 
+    // NOTE: Keep this logic in sync with android_os_Parcel.cpp
     status_t err = writeInt32(len);
     if (err == NO_ERROR) {
         uint8_t* data = (uint8_t*)writeInplace(len+sizeof(char));
@@ -1108,6 +1109,7 @@
 {
     if (str == nullptr) return writeInt32(-1);
 
+    // NOTE: Keep this logic in sync with android_os_Parcel.cpp
     status_t err = writeInt32(len);
     if (err == NO_ERROR) {
         len *= sizeof(char16_t);